... Wasn't there though an american B-XX (don't know the number, before the 52) bomber that had engine troubles on a trainings mission from Alaska to the Northwest of the US, crew bailed out and the plane flew over terrain for some thirty minutes or so before crashing in a remote, mountainous area of Canada...?
Was it this B-36 carrying and jettisoning an atomic bomb as described
here, the famous "Broken Arrow?
Sorry, also, for the deviation off topic.